What is ATLAS?
ATLAS is a particle physics experiment atthe Large Hadron Collider at CERN. The ATLAS detector is searching for newdiscoveries in the head-on collisions of protons of extraordinarily highenergy. ATLAS will learn about the basic forces that have shaped our Universesince the beginning of time and that will determine its fate. Among thepossible unknowns are the origin of mass, extra dimensions of space,microscopic black holes, and evidence for dark matter candidates in theUniverse.
ATLAS是什么?
ATLAS是一个在CERN的LHC进行的粒子物理实验。ATLAS探测器正在搜寻在高能质子对撞中的新发现。ATLAS将学习最基本的,从一开始塑造和决定宇宙命运的作用力。物质的起源,空间额外的维度,微观黑洞,暗物质存在的证据围绕着可能的未知世界。
What is the schedule of ATLAS?
ATLAS Schedule Late 2009 -- Startup of LHC and first event collisions at a total energy of 0.9 TeV and later at 2.36 TeV (above theprevious world record). March 2010 -- Event collisions at a total energy of 7 TeV. This led toabout eight months of data taking before a fewweeks of heavy ion collisions and the usual winter shutdown. Many papers with early results have come as aresult of the 2010 run. March 2011 -- A year of intensive data taking was followed by a few weeksof heavy ion collisions and a winter shutdown. Event collisions at a total energy of 7 TeV. (Dec. 2011 - Apr. 2012). April 2012 -- Event collisions at a totalenergy of 8 TeV. A year ofintensive data taking will be followed by a few weeksof heavy ion collisions. 2013 -- A long shutdown to prepare for anincrease of the total energy towards 14 TeV. Next 15-20 years -- Continued data taking with publication of results onan ongoing basis.
ATLAS的日程表是什么样的?
ATLAS的日程表 2009年末——LHC启动,第一次碰撞达到了0.9TeV的能量级别,后来达到了2.36TeV(大概是之前世界纪录的水平)。 2010年3月——碰撞达到了7TeV能量的水平。这导致了在重离子对撞和冬季常规停机前的几个星期花了大概八个月处理数据。许多有早期结果的论文促成了2010的运行。 2011年3月——几个月的重离子对撞和一次冬季停机后是一年的加强的数据处理。对撞达到了7TeV的能量级别。(2011年12月——2012年4月) 2012年4月——碰撞达到了8TeV的能量级别。数据处理将在几个星期的重离子对撞之后进行。 2013年——为准备增强到14TeV能量级别的对撞进行一次长时间的停机。 未来15-20年——根据情况变化继续处理数据,发表结果
Who are the 3000 physicists in ATLAS?
ATLAS is a virtual United Nations of 38 countries. In this troubled world, it is inspiring to see people from many lands working together in harmony. International collaboration has been essential to this success. These physicists come from more than 177 universities and laboratories and include 1000 students. ATLAS is one of the largest collaborative efforts ever attempted in the physical sciences.
在ATLAS的3000位物理学家是谁?
ATALS是一个由38个国家组成的虚拟联合国。在这混乱的世界,看到来自世界各地的人们和谐的在一起工作是鼓舞人心的。国际合作是成功的关键。这些物理学家来自超过177所大学和实验室,还有100名学生。
ATLAS是物理学史上最大的合作尝试。
What is the LHC?
The protons are accelerated in opposite directions in the Large Hadron Collider, an underground accelerator ring 27 kilometres in circumference at the CERN Laboratory in Geneva, Switzerland.Crashing together in the center of ATLAS, the particles will produce tiny fireballs of primordial energy. LHC recreates the conditions at the birth of the Universe -- 30 million times a second. Relics of the early Universe not seen since the Universe cooled after the Big Bang 14 billion years ago will spring fleetingly to life again. The LHC is in effect a Big Bang Machine.(Portions of this text are paraphrased from an article written by DennisOverbye in the New York Times on May 15, 2007, with permission.)
LHC是什么?
质子在大型强子对撞机(LHC),一个长达27千米,环绕着位于瑞士,日内瓦的CERN实验室的地下加速器中从相反的方向被加速。粒子在ATLAS的中心撞在一起,产生包含原始能量的极小的火球。LHC重新创建了宇宙诞生时的条件——3亿分之一秒。早期宇宙的遗留物自从宇宙冷却以后就不可见了,在大爆炸140亿年后将再一次飞速涌现。LHC事实上是一个大爆炸再现机。(这段文字的一部分是从Dennis Overbye于2007年5月17日发表在纽约时报上的一篇文章改写而来的,已获得授权。)
How big is ATLAS?
ATLAS is about 45 meters long, more than 25 meters high, and weighs about 7,000 tons. It is about half as big as the Notre Dame Cathedral in Paris and weighs the same as the Eiffel Tower or a hundred 747 jets (empty).
ATLAS有多大?
ATLAS大概长45米,高25米以上,重达7000吨。它大概有巴黎圣母院一半大,和埃菲尔铁塔或者一架空的747客机一样重。
How much data will be recorded?
If all the data from ATLAS would berecorded, this would fill 100,000 CDs per second. This would create a stack of CDs 450 feet high every second, which would reach to the moon and back twice each year. The data rate is also equivalent to 50 billion telephone calls at the same time. ATLAS actually only records a fraction of the data (those that may show signs of new physics) and that rate is equivalent to 27 CDs per minute.
会有多少数据将被记录?
如果将ATLAS产生的所有数据记录下来,大概每秒将装满100000张CD。这回每秒创造出一个150英尺(137.16米)高的CD堆,每年往返月球两次。这个数据量也和同时进行500亿次电话通讯相当。ATALS实际上只会记录一小部分数据(那些也许会显示出新的物理现象的数据),相当于每分钟27张CD的数据量。
Why is there so much excitement?
We will be re-writing our children's science textbooks, chapter by chapter. This experiment is the culmination of a lifetime of effort, and the excitement is unlike anything we have experienced as scientists. It may well be a monument to mankind.
ATLAS brings experimental physics into new territory. Most exciting is the completely unknown surprise - new processes and particles that would change our understanding of energy and matter.
为什么人们会那么激动?
我们将会彻底改写我们孩子的科普书籍。这个实验是积攒了一生的努力,我们作为科学家从来没有这么激动过。这也许将会成为人类的一个里程碑。
ATLAS把实验物理带入新的领域。最令人激动的是完全未知的惊喜——新的物理过程和粒子将完全改变我们对物质和能量的认识。
Are students involved?
ATLAS is involving students at many levels- from high school through graduate school. Education is a major component of our work. This research is having a big impact in inspiring young people to study and appreciate science, and then go into many fields using their skills including science, education, industry, finance, and public policy.
学生参与了么?
不同程度的学生参与了ATLAS——从高中到研究所。教育是我们工作的主要组成部分。这项研究对学生学习和理解科学有着重大影响,使他们在许多领域应用他们的技巧,例如科学,教育,工业,金融和国家政策。
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